heartache vs heartthrob

[Rag Ram]

English Language Tests, Intermediate level

ESL/EFL Test #185 "Expressions with heart: 'heartache', 'heartthrob', 'heartburn'", question 1

Getting over a break-up is hard to do. Instead of wallowing in your ........., try to take positive steps to put your failed relationship behind you.

(a) heartbeat
(b) heartburn
(c) heartache
(d) heartthrob

English Language Tests, Intermediate level

ESL/EFL Test #185 "Expressions with heart: 'heartache', 'heartthrob', 'heartburn'", answer 1

Getting over a break-up is hard to do. Instead of wallowing in your heartache, try to take positive steps to put your failed relationship behind you.

Correct answer: (c) heartache

Your answer was: incorrect
Getting over a break-up is hard to do. Instead of wallowing in your heartthrob, try to take positive steps to put your failed relationship behind you.
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please explain this ?

[Mister Micawber]

.
A heartache is a romantic sadness; a heartthrob is a romantically attractive person.
.
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Native English teacher at Mister Micawber's